Zhang John Z 4

What Happened John Z. Zhang, Executive Vice President & Chief Commercial and Customer Development Officer at Corning (GLW), had performance/restricted share awards convert on April 15, 2026. A total of 61,571 award-based shares converted (42,687 + 18,884) at an exercise/conversion price of $0.00. To cover tax withholding, 31,433 shares were surrendered/withheld at $168.27 per share, generating proceeds of $5,289,231. The net shares delivered to Zhang were 30,138 (61,571 converted minus 31,433 withheld).

Key Details

• Transaction date: April 15, 2026; Form filed April 16, 2026 (timely).
• Conversions/exercises recorded as M-code items: 42,687 and 18,884 shares @ $0.00.
• Tax withholding recorded as F-code: 31,433 shares @ $168.27 → $5,289,231.
• Net shares retained by insider after withholding: 30,138.
• Footnotes indicate these were performance share units (PSUs) and restricted stock units (RSUs); some awards vested/converted on April 15, 2026 while other award tranches remain subject to future vesting dates per the filing (see footnotes).
• Filing does not list total post-transaction beneficial ownership in the provided excerpt.

Context This was not an open-market sale or purchase by the insider but the conversion/vesting of PSUs/RSUs and a net-share settlement to satisfy tax withholding (a common, routine administrative step). The recorded $5.29M reflects the value of shares withheld for taxes, not an independent sale indicating a change in investment view.